A wound surface honeycomb microporous pipeline positive pressure drug delivery and negative pressure drainage system

Abstract

The present invention relates to a wound surface honeycomb microporous pipeline positive pressure drug delivery and negative pressure drainage system, comprising a wrapping material, a negative pressure source and a drainage tube, wherein one end of the drainage tube penetrates the wrapping material, and the other end is connected to the negative pressure source, and further comprises a microinjection pump and a delivery tube, wherein one end of the delivery tube is connected to the microinjection pump through a syringe, and the other end is connected to a honeycomb microporous net, wherein the honeycomb microporous net is fitted with the wound, and wherein the honeycomb microporous net comprises a drug delivery tube and a connector, wherein the connector is provided with a plurality of connection holes connected to the drug delivery tube, and the adjacent connectors are connected through the drug delivery tube, wherein the connector is provided with a self-blocking mechanism, and a microchannel for drug molecule derivation is provided on the outer wall of the drug delivery tube. The present invention has the following advantages and effects: the present scheme utilizes a new structure to achieve the purpose of improving the treatment effect.

Description

Technical Field

[0001] The invention relates to a wound surface honeycomb microporous pipeline positive pressure drug delivery and negative pressure drainage system. Background Art

[0002] Wounds (burns) have been harmful to human health since ancient times. How to repair wounds, accelerate wound healing, prevent infection, reduce systemic and local complications, promote functional recovery, reduce disability rate, and alleviate patient pain is a clinical problem that needs to be solved urgently.

[0003] At present, a Chinese patent with announcement number CN201988001U discloses a wound atomization drug delivery and intermittent negative pressure closed drainage device, which includes a wrapping material, a drainage tube and a negative pressure source. One end of the drainage tube with a side hole is inserted into the wrapping material, and the other end of the drainage tube is connected to the negative pressure source. It also includes an ultrasonic nebulizer and an atomization gas introduction tube. One end of the atomization gas introduction tube is connected to the ultrasonic nebulizer, and the other end of the atomization gas introduction tube with a side hole is inserted into the wrapping material.

[0004] This wound atomization drug delivery and intermittent negative pressure closed drainage device has a simple structure. It utilizes the relatively closed space formed on the wound surface by VSD technology to inject ultrasonic atomized gas between two adjacent negative pressure drainages. However, in actual clinical applications, due to the different sizes of the wounds of patients, it is necessary to trim the atomized gas introduction tube. Since the ultrasonic atomized gas is extracted from the hole on the side wall of the atomized gas introduction tube, trimming the end of the atomized gas introduction tube will cause more ultrasonic atomized gas to be extracted from the end of the atomized gas introduction tube, while less ultrasonic atomized gas is extracted from the hole, which will cause the wound (drug concentration) to be different, affecting the treatment effect. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a wound surface honeycomb microporous pipeline positive pressure drug delivery and negative pressure drainage system, which achieves the purpose of improving the treatment effect by arranging a self-sealing mechanism in the connecting hole.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a wound honeycomb microporous pipeline positive pressure drug delivery and negative pressure drainage system, comprising a wrapping material, a negative pressure source and a drainage tube, one end of the drainage tube penetrates into the wrapping material, and the other end is connected to the negative pressure source, and also comprises a microinjection pump and a delivery tube, one end of the delivery tube is connected to the microinjection pump through a syringe, and the other end is connected to a honeycomb microporous mesh, the honeycomb microporous mesh is fitted with the wound, the honeycomb microporous mesh comprises a drug delivery tube and a connector, a plurality of connection holes connected to the drug delivery tube are provided on the connector, adjacent connectors are connected through the drug delivery tube, a self-blocking mechanism is arranged on the connector, and a microchannel for drug molecule derivation is provided on the outer wall of the drug delivery tube.

[0007] By adopting the above technical scheme, the growth factor is placed in a syringe, and then the syringe is placed on a micro-injection pump; the micro-injection pump can facilitate the control of the extrusion volume of the syringe; the dosing tube is separated from the connector to adapt to wounds of different sizes, and then the honeycomb microporous mesh is laid on the surface of the wound, and at the same time, the self-sealing mechanism can block the connecting hole to avoid the large-scale export of growth factors; the micro-injection pump is started, and the growth factor enters the honeycomb microporous mesh along the delivery tube, and through the action of pressure, the growth factor is squeezed out from the microchannel and can be evenly attached to the surface of the wound, so that it has the function of adapting to wounds of different areas, and the growth factor is attached to the outer wall of the dosing tube through the tension of the surface, so that the growth factor can be placed on the wound surface for a long time without falling due to gravity, so as to adapt to wounds of different depths and improve the treatment effect; and the cavity surrounded by the multiple dosing tubes can facilitate the passage of wound exudate and is not easy to cause blockage.

[0008] The present invention is further configured as follows: the self-sealing mechanism includes a sealing block, a spring sheet and a sealing groove, the two ends of the spring sheet are respectively connected to the sealing block and the inner wall of the connecting head, the sealing groove is opened on the connecting head and communicated with the connecting hole, the sealing block cooperates with the sealing groove, and the sealing block is pushed out of the sealing groove when the drug delivery tube penetrates into the connecting head.

[0009] By adopting the above technical solution, when the dosing tube is taken out from the connecting hole, the growth factor enters the connecting head, and the sealing block is embedded in the sealing groove by pressure, and then the sealing block seals the sealing groove and the connecting hole, so that the growth factor cannot directly act on the wound from the connecting hole, and the growth factor can only be exported from the microchannel on the dosing tube.

[0010] The present invention is further configured as follows: the cross section of the sealing block is trapezoidal, and the area of ​​the sealing block at one end away from the connecting hole is larger than the area of ​​the sealing block at one end facing the connecting hole.

[0011] By adopting the above technical solution, the growth factor solution has pressure in the connector, and the pressure at the end of the sealing block away from the connecting hole is greater than the pressure at the end close to the connecting hole, so that the sealing block can seal the sealing groove more quickly and reduce the waste of growth factors.

[0012] The present invention is further configured as follows: the connector is provided with three connecting holes and the axial center angle of adjacent connecting holes is 90°<a<180°.

[0013] By adopting the above technical solution, the growth factor solution is injected into the connector, which is not easy to cause damage to the structure of the connector, prolongs the service life, and can adapt to higher pressure.

[0014] The present invention is further configured as follows: the honeycomb microporous mesh is made of soft degradable material.

[0015] By adopting the above technical solution, the process of removing the honeycomb microporous mesh from the wound is eliminated, thereby improving the protective effect on the wound.

[0016] The present invention is further configured as follows: the microinjection pump is provided with a temperature control device and a temperature sensor.

[0017] By adopting the above technical solution, when the temperature sensor senses that the temperature is too high, the temperature control device starts and cools the microinjection pump, thereby cooling the growth factor to maintain the optimal activity of the growth factor and improve the treatment effect.

[0018] The present invention is further configured as follows: a pressure sensor is provided on the delivery pipe.

[0019] By adopting the above technical solution, the microinjection pump injects the growth factor into the honeycomb microporous mesh along the delivery tube. The pressure sensor can be checked at all times through the pressure sensor to avoid excessive pressure in the delivery tube causing the honeycomb microporous mesh to rupture. At the same time, the pressure value transmitted by the pressure sensor can be used to determine whether the honeycomb microporous mesh is blocked.

[0020] The present invention is further configured to include a microprocessor control unit for controlling working parameters, and the microprocessor control unit is electrically connected to an alarm.

[0021] By adopting the above technical solution, the microprocessor control unit controls various working parameters, and when the threshold is exceeded, the alarm is used to alert the nurse.

[0022] The present invention is further configured as follows: the temperature control device includes a refrigerator and a placement chamber, the refrigerator and the temperature sensor are fixed on the inner wall of the placement chamber, the microinjection pump and the syringe are placed in the placement chamber, a delivery hole for passing a delivery pipe is opened on the outer wall of the placement chamber, a cover plate is hinged on the placement chamber, and the cover plate is connected to the placement chamber through a positioning mechanism.

[0023] By adopting the above technical solution, a syringe containing growth factors is placed in the placement chamber, the cover is flipped along the hinge and positioned by a positioning mechanism, the syringe is cooled by a refrigerator, and the start and stop of the refrigerator are controlled by a temperature sensor; the growth factors can have higher activity and the treatment effect is improved.

[0024] The present invention is further configured as follows: the positioning mechanism includes a pressing block, a supporting seat, an inclined block, an S-shaped block, an elastic member, a sliding column, a sliding sleeve and a positioning hole; the supporting seat is fixed on the placing chamber; the pressing block is slidably connected to the supporting seat and is connected to the sliding column through the elastic member; the inclined block is fixed on the inner wall of the pressing block; a transverse hole is provided on the sliding sleeve; the S-shaped block is slidably connected to the transverse hole and both ends are in contact with the inclined block; an inclined hole is provided on the outer wall of the sliding column; the middle part of the S-shaped block is slidably connected to the inclined hole; the sliding sleeve is fixed on the supporting seat; the sliding column is slidably connected to the sliding sleeve and cooperates with the positioning hole; the positioning hole is provided on the cover plate.

[0025] By adopting the above technical solution, the cover plate is moved along the hinge toward the direction close to the support seat, so that the edge of the cover plate contacts the sliding column, and the sliding column slides into the support seat. As the sliding column moves further, when the positioning hole corresponds to the sliding column, the sliding column is embedded into the positioning hole through the elastic force of the elastic member, thereby realizing the positioning of the cover plate; after the growth injection is completed, the pressing block is pressed, and the inclined block pushes the S-shaped block to move along the horizontal hole, so that the S-shaped block contacts the inner wall of the inclined hole and pushes the sliding column to move toward the pressing block, so that the sliding column is pulled out of the positioning hole, and the cover plate can be flipped along the hinge, which is easy to operate.

[0026] In summary, the present invention has the following beneficial effects:

[0027] 1. By disassembling the medication tube and the connector, it can adapt to wounds of different sizes, depths and shapes, greatly improving practicality;

[0028] 2. The drug delivery pipeline with honeycomb structure can not only cover the wound surface extensively, but also prevent the drug delivery pipeline from hindering the drainage of wound exudate, thus improving the negative pressure drainage effect;

[0029] 3. The temperature control device keeps the growth factor at a high activity state to improve the treatment effect;

[0030] 4. The growth factor adheres to the surface of the drug delivery tube due to surface adhesion, which can treat the wound in the concave part and is not easy to slide due to gravity, thus improving the treatment effect;

[0031] 5. The human body can degrade the honeycomb microporous mesh, which can reduce the workload of medical staff and reduce secondary damage to the wound. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural diagram of the control panel;

[0033] Figure 2 It is a structural diagram of a microprocessor control unit;

[0034] Figure 3 This is a schematic diagram of positive pressure drug delivery state;

[0035] Figure 4 It is a schematic diagram of a partially enlarged structure of a honeycomb microporous network;

[0036] Figure 5 is a cross-sectional view of the connector;

[0037] Figure 6 This is a cross-sectional view of the drug delivery tube;

[0038] Figure 7 This is a partially enlarged cross-sectional view of the drug delivery tube to illustrate the microchannel structure;

[0039] Figure 8 A schematic diagram showing the connection structure between the connector and the drug delivery tube;

[0040] Fig. 9 This is a schematic diagram of the use state of the present invention;

[0041] Fig.10 It is a schematic diagram of the placement box structure;

[0042] Fig.11 It is a structural diagram of the positioning mechanism.

[0043] 1. In the drawings: 11. wrapping material; 12. negative pressure source; 13. drainage tube; 14. sealing film; 21. microinjection pump; 22. delivery tube; 3. honeycomb microporous mesh; 4. temperature control device; 41. refrigerator; 42. placement chamber; 421. delivery hole; 43. temperature sensor; 44. cover plate; 5. positioning mechanism; 51. pressing block; 52. support seat; 53. inclined block; 54. S-shaped block; 55. elastic member; 56. sliding column; 57. sliding sleeve; 58. positioning hole; 59. inclined hole; 591. transverse hole; 61. drug delivery tube; 62. connector; 63. connecting hole; 64. microchannel; 7. self-sealing mechanism; 71. sealing block; 72. spring; 73. sealing groove; 8. pressure sensor; 9. cavity. DETAILED DESCRIPTION

[0044] The present invention will be further described with reference to the accompanying drawings.

[0045] like Figures 1 to 11 As shown, a wound surface honeycomb microporous pipeline positive pressure drug administration and negative pressure drainage system includes a wrapping material 11, a negative pressure source 12 and a drainage tube 13. The wrapping material 11 is made of sponge. One end of the drainage tube 13 is inserted into the wrapping material 11, and the other end is connected to the negative pressure source 12. The negative pressure source 12 is an air pump. Start the negative pressure source 12, the scab is embedded in the wrapping material 11, and the pus is sucked into the drainage tube 13, so as to achieve wound cleaning. In order to further improve the sealing performance, a sealing film 14 is coated on the outside of the wrapping material 11, the coverage area of ​​the sealing film 14 is larger than the coverage area of ​​the sponge, and the sponge is placed in the sealing film 14.

[0046] The system also includes a microinjection pump 21 and a delivery tube 22. One end of the delivery tube 22 is connected to the microinjection pump 21 through a syringe, and the other end is connected to a honeycomb microporous network 3. Growth factors are built into the syringe. In order to make the growth factors have higher activity and avoid the activity reduction caused by too high room temperature, a temperature control device 4 and a temperature sensor 43 are provided on the microinjection pump 21.

[0047] The temperature control device 4 includes a refrigerator 41 and a placement chamber 42. The refrigerator 41 and the temperature sensor 43 are fixed on the inner wall of the placement chamber 42, and the microinjection pump 21 and the syringe are placed in the placement chamber 42.

[0048] A delivery hole 421 for passing the delivery tube 22 is provided on the outer wall of the placement chamber 42, and a cover plate 44 is hinged on the placement chamber 42, and the cover plate 44 is connected to the placement chamber 42 through a positioning mechanism 5. The cover plate 44 is placed on the placement chamber 42 and positioned by the positioning mechanism 5, so that the syringe in the placement chamber 42 can be kept warm and energy consumption can be reduced. The temperature in the placement chamber 42 can be monitored at all times by the temperature sensor 43. When the temperature is too high, the refrigerator 41 is started, the placement chamber 42 is cooled, and the growth factor in the syringe is cooled. In order to keep the growth factor at its best activity, the temperature in the placement chamber 42 is maintained at 2-8°C.

[0049] The positioning mechanism 5 includes a pressing block 51, a support seat 52, an inclined block 53, an S-shaped block 54, an elastic member 55, a sliding column 56, a sliding sleeve 57 and a positioning hole 58. The support seat 52 is fixed on the placement chamber 42, and the pressing block 51 is slidably connected to the support seat 52 and connected to the sliding column 56 through the elastic member 55; the elastic member 55 is a spring. The inclined block 53 is fixed on the inner wall of the pressing block 51; a transverse hole 591 is provided on the sliding sleeve 57, and the S-shaped block 54 is slidably connected to the transverse hole 591 and both ends are in contact with the inclined block 53. An inclined hole 59 is provided on the outer wall of the sliding column 56, and the middle part of the S-shaped block 54 is slidably connected to the inclined hole 59. The sliding sleeve 57 is fixed on the support seat 52, and the sliding column 56 is slidably connected to the sliding sleeve 57 and cooperates with the positioning hole 58; the positioning hole 58 is provided on the cover plate 44.

[0050] Move the cover plate 44 along the hinge toward the support seat 52, so that the edge of the cover plate 44 contacts the sliding column 56, and the sliding column 56 slides into the support seat 52. As the sliding column 56 moves further, when the positioning hole 58 corresponds to the sliding column 56, the sliding column 56 is embedded in the positioning hole 58 by the elastic force of the elastic member 55, so that the cover plate 44 is positioned; after the growth injection is completed, press the pressing block 51, and the inclined block 53 pushes the S-shaped block 54 to move along the transverse hole 591, so that the S-shaped block 54 contacts the inner wall of the inclined hole 59 and pushes the sliding column 56 to move toward the pressing block 51, so that the sliding column 56 is pulled out of the positioning hole 58, and the cover plate 44 can be turned over along the hinge, which is easy to operate.

[0051] The honeycomb microporous mesh 3 is fitted with the inner wall of the wound, and the honeycomb microporous mesh 3 includes a plurality of dosing tubes 61 and a plurality of connectors 62. The connector 62 is provided with three connecting holes 63 connected to the dosing tubes 61, and the angle a formed by the axes of the two connecting holes 63 is 120°. Two adjacent connectors 62 are connected through the dosing tubes 61. Thus, the dosing tubes 61 and the connectors 62 are arranged in a hexagon. A microchannel 64 for the molecular derivation of growth factors is provided on the outer wall of the dosing tube 61. For ease of installation, the outer diameter of the end of the delivery tube 22 away from the syringe is gradually reduced, so that the delivery tube 22 is fixedly connected to the connecting hole 63 on the connector 62.

[0052] Three self-blocking mechanisms 7 are arranged on each connector 62 , and one self-blocking mechanism 7 is arranged in each connecting hole 63 .

[0053] Among them, the self-sealing mechanism 7 includes a sealing block 71, a spring piece 72 and a sealing groove 73. The interior of the connector 62 has a connecting cavity, and the connecting cavity is connected to the connecting hole 63. The two ends of the spring piece 72 are respectively connected to the sealing block 71 and the inner wall of the connecting cavity. The sealing groove 73 is provided on the connector 62 and is connected to the connecting hole 63, and the sealing block 71 cooperates with the sealing groove 73. When the dosing tube 61 is inserted into the connector 62, the sealing block 71 is pushed out of the sealing groove 73, and the growth factor can be injected from the dosing tube 61 into the connecting cavity, or the growth factor can be injected from the connecting cavity into the dosing tube 61.

[0054] When the drug delivery tube 61 is pulled out from the connection hole 63, the sealing block 71 is embedded in the sealing groove 73 by the elastic force of the spring sheet 72 itself, and at the same time, the sealing block 71 is firmly embedded in the sealing groove 73 by the internal hydraulic pressure of the growth factor in the connector 62. The cross section of the sealing block 71 is arranged in a trapezoidal shape, and the area of ​​the sealing block 71 at the end away from the connection hole 63 is larger than the area of ​​the sealing block 71 at the end facing the connection hole 63. Due to the pressure of the growth factor, the pressure at the end of the sealing block 71 away from the connection hole 63 is greater than the pressure at the end of the sealing block 71 facing the connection hole 63, so that the sealing block 71 can be more tightly embedded in the sealing groove 73 to achieve a sealing effect.

[0055] In order to reduce the workload of nurses and reduce the damage to the wound, the honeycomb microporous mesh 3 is made of soft and degradable material.

[0056] As mentioned above, when cleaning the wound, the scab and pus can quickly pass through the cavity 9 surrounded by the six dosing tubes 61, the scab is embedded in the wrapping material 11, and the pus is sucked away by the drainage tube 13. After the wound is cleaned, the microinjection pump 21 is started, and the syringe injects the growth factor into the connecting block along the delivery tube 22, and then completely injects it into the honeycomb microporous mesh 3. The growth factor is released through the microchannel 64 on the dosing tube 61. Since the interior of each dosing tube 61 has a high pressure, an equal amount of growth factor can be released from each dosing tube 61, so that every part of the wound can be treated. In addition, due to the tension of the liquid on the surface of the growth factor, a part of the growth factor is placed on the outer wall of the dosing tube 61 for a long time to avoid all of them gathering at the lowest point of the wound due to gravity. Greatly improve the treatment effect.

[0057] Since the wounds vary in size and depth, the required size of the honeycomb microporous mesh 3 is also different. Take a honeycomb microporous mesh 3 with an area larger than the wound area, pull out the peripheral drug delivery tube 61 from the connector 62, and embed the sealing plug corresponding to the drug delivery tube 61 into the sealing groove 73, so that the connection hole 63 corresponding to the drug delivery tube 61 is blocked, thereby adapting to the current wound. And when the growth factor is injected into the modified honeycomb microporous mesh 3, it can also have the effect of uniformly releasing the growth factor, greatly improving the practicality and convenience of treatment.

[0058] In order to improve the stability of the honeycomb microporous network 3 , the inner diameter of the connecting hole 63 is slightly smaller than the outer diameter of the end of the drug delivery tube 61 , so that the drug delivery tube 61 and the connecting hole 63 are interference fit.

[0059] In order to facilitate the passage of growth factors and prevent the drug delivery tube 61 from being broken, the pore size of the microchannel 64 is 5 μm-10 μm, and a pressure sensor 8 is provided on the delivery tube 22 .

[0060] The system also includes a microprocessor control unit for controlling the operating parameters. The microprocessor control unit is electrically connected to an alarm. The microprocessor control unit is electrically connected to a control panel. Figure 2 The figure shows the structure block diagram of the microprocessor control unit. The specific description is as follows:

[0061] Microprocessor: Performs the operations programmed by the control panel and provides power to the control panel.

[0062] Control panel functions: microprocessor startup, setting of working mode and various parameters.

[0063] Power supply: Provides power to the microprocessor.

[0064] Figure 1 This is a schematic diagram of the control panel. The functions of each button are as follows:

[0065] Automatic mode: When the automatic mode button is pressed, the system enters the automatic mode and automatically sets the negative pressure suction time, maintenance time, drug administration time and the minimum / maximum negative pressure setting value. The microprocessor controls the negative pressure source 12 to start, and the digital display tube at the maintenance time displays the duration. When the duration is reduced to 0, the negative pressure source 12 stops working. The microcontroller controls the microinjection pump 21 to start, and the microinjection pump 21 injects the growth factor into the honeycomb microporous mesh 3, and displays the time at the drug administration time on the control panel. When the drug administration time is reduced to 0, the microinjection pump 21 is turned off. By setting the minimum / maximum negative pressure setting value, the working power of the negative pressure source 12 can be controlled to avoid secondary damage to the wound caused by excessive power.

[0066] Manual mode: When the manual mode button is pressed, the duration is controlled by pressing the negative pressure suction button, and then by pressing the 10 buttons 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 0, and the time is displayed on the digital display tube at the real-time time display. Then press the set button, the negative pressure source 12 starts, and the light on the maintenance button lights up. When the time at the real-time time display is reduced to 0, the light on the maintenance button goes out. Press the medication button, and similarly, set the duration. After pressing the set button, the microinjection pump 21 starts and injects the growth factor into the honeycomb microporous mesh 3. When the time at the real-time time display is reduced to 0, the microinjection pump 21 is turned off.

[0067] In the automatic mode or the manual mode, when the microinjection pump 21 is started and the growth factor is injected into the honeycomb microporous mesh 3, when a large number of microchannels 64 on the honeycomb microporous mesh 3 are blocked by scabs, the pressure in the delivery tube 22 gradually increases, and the pressure sensor 8 senses that the pressure is greater than the threshold value, and transmits an electrical signal to the microprocessor, and the microprocessor controls the alarm to start, and at the same time, the light at the honeycomb microporous mesh 3 blocking alarm on the control panel lights up. The microprocessor sends an electrical signal to the microinjection pump 21 to shut down the microinjection pump 21.

[0068] The temperature sensor 43 transmits an electrical signal to the microprocessor, which transmits an electrical signal to the control panel, and the digital display tube at the medicine temperature on the control panel displays the current temperature in the placement chamber 42. When the temperature is lower than 2°C, the refrigerator 41 stops working; when the temperature is higher than 8°C, the refrigerator 41 works.

[0069] The real-time pressure inside the medicine is the pressure sensed by the pressure sensor 8. The value is displayed on the digital display tube. The real-time pressure inside the medicine allows the nurse to know the current growth factor injection speed and adjust the power of the microinjection pump 21 to adapt to wounds in different positions of the human body and patients of different ages.

[0070] In summary, this system can completely drain the wound, and then can evenly inject the growth factor onto the surface of the wound when the growth factor is highly active, and can adapt to wounds of various areas, depths, and shapes, and has excellent practicality. And because the honeycomb microporous mesh 3 is degradable as a whole, it does not need to be removed from the wound after 7 days of use, avoiding secondary injury to the wound and facilitating wound healing. It greatly reduces the workload of patients' through-holes and medical staff's dressing changes, and has broad market prospects.

[0071] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A wound surface honeycomb microporous pipeline positive pressure drug administration and negative pressure drainage system, comprising a wrapping material, a negative pressure source and a drainage tube, wherein one end of the drainage tube penetrates into the wrapping material and the other end is connected to the negative pressure source, and is characterized by: It also includes a microinjection pump and a delivery tube, one end of the delivery tube is connected to the microinjection pump through a syringe, and the other end is connected to a honeycomb microporous mesh, the honeycomb microporous mesh is fitted with a wound, the honeycomb microporous mesh includes a drug delivery tube and a connector, the connector is provided with a plurality of connection holes connected to the drug delivery tube, adjacent connectors are connected through the drug delivery tube, a self-sealing mechanism is provided on the connector, a microchannel for drug molecule extraction is provided on the outer wall of the drug delivery tube, three connection holes are provided on the connector, and the axial angle of adjacent connection holes is 90°<a<180°, and the honeycomb microporous mesh is made of soft and degradable material.

2. According to claim 1, a wound surface honeycomb microporous pipeline positive pressure drug delivery and negative pressure drainage system is characterized by: The self-sealing mechanism includes a sealing block, a spring sheet and a sealing groove. The two ends of the spring sheet are respectively connected to the sealing block and the inner wall of the connector. The sealing groove is opened on the connector and communicated with the connecting hole. The sealing block cooperates with the sealing groove. When the drug delivery tube penetrates the connector, the sealing block is pushed out of the sealing groove.

3. According to claim 2, a wound surface honeycomb microporous pipeline positive pressure drug delivery and negative pressure drainage system is characterized by: The cross section of the sealing block is trapezoidal, and the area of ​​the sealing block at one end away from the connecting hole is larger than the area of ​​the sealing block at one end facing the connecting hole.

4. According to claim 1, a wound surface honeycomb microporous pipeline positive pressure drug delivery and negative pressure drainage system is characterized by: The microinjection pump is provided with a temperature control device and a temperature sensor.

5. According to claim 4, a wound surface honeycomb microporous pipeline positive pressure drug delivery and negative pressure drainage system is characterized by: The delivery pipe is provided with a pressure sensor.

6. The wound surface honeycomb microporous pipeline positive pressure drug delivery and negative pressure drainage system according to claim 5 is characterized by: It also includes a microprocessor control unit for controlling the working parameters, and the microprocessor control unit is electrically connected to an alarm.

7. The wound surface honeycomb microporous pipeline positive pressure drug delivery and negative pressure drainage system according to claim 4 is characterized by: The temperature control device includes a refrigerator and a placement chamber. The refrigerator and the temperature sensor are fixed on the inner wall of the placement chamber. The micro-injection pump and the syringe are placed in the placement chamber. A delivery hole for passing a delivery pipe is opened on the outer wall of the placement chamber. A cover plate is hinged on the placement chamber, and the cover plate is connected to the placement chamber through a positioning mechanism.

8. The wound surface honeycomb microporous pipeline positive pressure drug delivery and negative pressure drainage system according to claim 7 is characterized by: The positioning mechanism includes a pressing block, a supporting seat, an inclined block, an S-shaped block, an elastic member, a sliding column, a sliding sleeve and a positioning hole. The supporting seat is fixed on the placing chamber, the pressing block is slidably connected to the supporting seat and is connected to the sliding column through the elastic member, the inclined block is fixed on the inner wall of the pressing block, a transverse hole is provided on the sliding sleeve, the S-shaped block is slidably connected to the transverse hole and both ends are in contact with the inclined block, an inclined hole is provided on the outer wall of the sliding column, the middle part of the S-shaped block is slidably connected to the inclined hole, the sliding sleeve is fixed on the supporting seat, the sliding column is slidably connected to the sliding sleeve and cooperates with the positioning hole, and the positioning hole is provided on the cover plate.

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